Manufacturing method of three-dimensional heat conducting structure

ABSTRACT

A manufacturing method of a three-dimensional heat conducting structure, comprising: providing a vapor chamber having at least one insert hole; providing a heat pipe having an open end, and inserting the open end into the insert hole; providing a support ring, and sheathing the support ring on either the heat pipe or the vapor chamber, wherein the supporting ring extends along an axial direction of the heat pipe and has a contact surface facing toward an outer surface of the vapor chamber, and the contact surface is in contact with the outer surface of the vapor chamber; and providing a soldering means, and applying the soldering means between the support ring and the heat pipe to combine the heat pipe onto the vapor chamber.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a divisional patent application of U.S. application Ser. No. 14/794,028 filed Jul. 8, 2015, which claims priority under 35 U.S.C. § 119(a) on Patent Application No(s). 104116596 filed in Taiwan, R.O.C. on May 25, 2015, the entire contents of which are hereby incorporated by reference.

TECHNICAL FIELD

The present invention relates to a heat conducting device, and more particularly to a three-dimensional heat conducting structure and its manufacturing method.

BACKGROUND

Vapor chamber or heat pipe is a high-performance heat conducting device for conducting a local heat source to other places. With the features of high thermal conductivity, light weight, simple structure, and multi-function, the vapor chamber and heat pipe can conduct a large quantity of heat without consuming electric power, so that the vapor chamber and heat pipe have been used extensively in the market of high-performance cooling components such as the server, communication, high-end graphic card, and high-efficiency LED cooling components.

In a conventional heat conducting structure, the heat pipe is combined to the vapor chamber to improve the heat conduction speed. In the aforementioned heat conducting structure, the heat pipe and the vapor chamber are combined by means of soldering. However, the melted solder may overflow to the desired combining position as well as other positions such as a surface of the vapor chamber, and thus affecting the combining effect of the soldering, resulting in an appearance defect, and reducing the product yield.

SUMMARY

Therefore, it is a primary objective of the present invention to provide a three-dimensional heat conducting structure and its manufacturing method to prevent the solder from overflowing to the surface of the vapor chamber, so as to improve the product yield.

To achieve the aforementioned and other objectives, the present invention provides a three-dimensional heat conducting structure, comprising a vapor chamber, at least one heat pipe, at least one support ring, and a solder. The vapor chamber comprises a casing, and at least one insert hole formed on a side of the casing and communicated with the casing; the heat pipe has an open end inserted into the insert hole and communicated to the interior of the casing; the support ring is sheathed on a joint position of the heat pipe and the vapor chamber, and a side of the support ring is attached onto an outer surface of the vapor chamber; and the solder is disposed between the support ring and the heat pipe and provided for combining the heatpipe onto the vapor chamber.

To achieve the aforementioned and other objectives, the present invention further provides a manufacturing method of a three-dimensional heat conducting structure, and the manufacturing method comprises the steps of: (a) providing a vapor chamber having at least one insert hole; (b) providing a heat pipe having an open end, and inserting the open end into the insert hole; (c) providing a support ring, and sheathing the support ring on a joint position of the heat pipe and the vapor chamber; and (d) providing a soldering means, and applying the soldering means between the support ring and the heat pipe to combine the heat pipe onto the vapor chamber.

Compared with the prior art, the three-dimensional heat conducting structure of the present invention has the support ring sheathed on the joint position of the heat pipe and the vapor chamber and provided for preventing the solder from overflowing to the surface of the vapor chamber to improve the product yield. Further, the support ring provides a supporting force to the combination of the heat pipe and the vapor chamber, so that the heat pipe is combined onto the vapor chamber more securely by the solder to enhance the practicality of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure will become better understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only and thus are not intending to limit the present disclosure and wherein:

FIG. 1 is flow chart of a manufacturing method of a three-dimensional heat conducting structure of the present invention;

FIG. 2 is an exploded view of a three-dimensional heat conducting structure of the present invention;

FIG. 3 is a perspective view of a three-dimensional heat conducting structure of the present invention;

FIG. 4 is a cross-sectional view of a three-dimensional heat conducting structure in accordance with a first preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of a three-dimensional heat conducting structure in accordance with a second preferred embodiment of the present invention;

FIG. 6 is a cross-sectional view of a three-dimensional heat conducting structure in accordance with a third preferred embodiment of the present invention.

DETAILED DESCRIPTION

The technical contents of the present invention will become apparent with the detailed description of preferred embodiments accompanied with the illustration of related drawings as follows.

With reference to FIGS. 1 to 4 for a manufacturing flow chart, an exploded view, a perspective view and a cross-sectional view of a three-dimensional heat conducting structure of the present invention respectively, the manufacturing method of a three-dimensional heat conducting structure comprises the steps of: providing a vapor chamber 10 having at least one insert hole 12 (Step a); providing a heat pipe 20 having an open end 21, and inserting the open end 21 into the insert hole 12 (Step b); providing a support ring 30, and sheathing the support ring 30 on a joint position of the heat pipe 20 and the vapor chamber 10 (Step c); and providing a soldering means, and applying the soldering means between the support ring 30 and the heat pipe 20 for combining the heat pipe 20 onto the vapor chamber 10.

With reference to FIG. 2 for a three-dimensional heat conducting structure 1 of the present invention, the three-dimensional heat conducting structure 1 comprises a vapor chamber 10, at least one heat pipe 20, a support ring 30, and a solder 40. The support ring 30 is sheathed on the heat pipe 20 and disposed at a joint position of the heat pipe 20 and the vapor chamber 10, and the heat pipe 20 is combined to the vapor chamber 10 by the solder 40, and the detailed structure will be described later.

The vapor chamber 10 includes a casing 11, and at least one insert hole 12 formed on a side of the casing 11 and communicated with the interior of the casing 11. In a preferred embodiment of the present invention, the vapor chamber 10 further includes a capillary structure 14 and a working fluid (not shown in the figure) disposed at the interior of the casing 11.

The heat pipe 20 is a hollow metal pipe capable of conducting heat quickly and uniformly without requiring electric power supply. The heat pipe 20 has an open end 21, and the open end 21 is inserted into the insert hole 12 and communicated with the interior of the casing 11. In practice, the number of insert holes 12 of the vapor chamber 10 is equal to the number of heat pipes 20. In this embodiment, the heat pipe 20 includes a cover 22 and a capillary layer 23. The capillary layer 23 is located inside the cover 22, and the cover 22 has the open end 21. When the heat pipe 20 is inserted into the insert hole 12, both the cover 22 and the capillary layer 23 are surrounded by the insert hole 12.

In addition, the support ring 30 is a ring made of metal (such as copper), or heat resistant non-metal (such as ceramic). The support ring 30 is sheathed on a joint position of the heat pipe 20 and the vapor chamber 10, and a side of the support ring 30 is attached onto an outer surface of the vapor chamber 10.

In FIG. 3, after the support ring 30 is sheathed on the outer side of the heat pipe 20, the solder 40 is placed and soldered between the support ring 30 and the heat pipe 20 to combine the heat pipe 20 onto the vapor chamber 10 by the solder 40, and the support ring 30 is provided for preventing the solder 40 from overflowing to a surface of the vapor chamber 10 to improve the product yield. It is noteworthy that the present invention is not limited to the use of the solder 40 only, but other means such as a solder ring, a solder strip, a solder, or a solder paste may be used instead.

Preferably, in Step (a), the vapor chamber 10 has a rim 13 formed around the periphery of the insert hole 12 and protruded from an outer surface of the vapor chamber 10 outer surface, and an inner wall surface of the rim 13 is attached to an outer surface of the heat pipe 20. In Step (b), an inner wall surface of the support ring 30 is attached on an outer wall surface of the rim 13. The rim 13 is provided for giving a better positioning effect of inserting the heat pipe 20 into the insert hole 12 in order to have a better combination of the heat pipe 20 and the vapor chamber 10, so as to improve the yield of the three-dimensional heat conducting structure 1.

It is noteworthy that the solder is applied after the support ring 30 is sheathed on the outer side of the heat pipe 20, and the support ring 30 provides a supporting force for the combination of the heat pipe 20 and the vapor chamber 10, so that the heatpipe 20 is combined onto the vapor chamber 10 securely by the solder 40.

With reference to FIG. 5 for a cross-sectional view of a three-dimensional heatconducting structure 1 a in accordance with a second preferred embodiment of the present invention, this preferred embodiment is substantially the same as the first preferred embodiment, and the three-dimensional heat conducting structure 1 a comprises a vapor chamber 10 a, at least one heat pipe 20 a, a support ring 30 a and a solder 40 a. The vapor chamber 10 a has an insert hole 12 a, and an end of the heatpipe 20 a is inserted into the insert hole 12 a. In addition, the support ring 30 a is sheathed on the heat pipe 20 a and disposed at a joint position of the heat pipe 20 a and the vapor chamber 10 a. In addition, the heat pipe 20 a is combined onto the vapor chamber 10 a by the solder 40 a.

The difference between this preferred embodiment and the first preferred embodiment resides on that the vapor chamber 10 a does not have any rim formed around the periphery of the insert hole 12, and the support ring 30 a is sheathed on the heat pipe 20 a directly. In other words, the inner wall surface of the support ring 30 a is attached on the external peripheral surface of the heat pipe 20 a. Similarly, the solder 40 a is disposed between the support ring 30 a and the heat pipe 20 a, and the heat pipe 20 a is combined to the vapor chamber 10 a by the solder 40 a.

It is noteworthy that the support ring 30 a of this preferred embodiment is unlike the rim structure of the vapor chamber 10 a and the difference resides on that the support ring 30 a is not formed directly from the vapor chamber 10 a, so that the shape and size of the support ring 30 a may be designed or changed according to the actual using requirements. The support ring 30 is provided for giving a better supporting force for the combination of the heat pipe 20 a and the vapor chamber 10 a. In addition, the support ring 30 a is provided for preventing the solder 40 a from overflowing to the surface of the vapor chamber 10 a to provide a better combining effect.

With reference to FIG. 6 for a cross-sectional view of a three-dimensional heatconducting structure 1 b in accordance with a third preferred embodiment of the present invention, this preferred embodiment is substantially the same as the first preferred embodiment, and the three-dimensional heat conducting structure 1 b comprises a vapor chamber 10 b, at least one heat pipe 20 b, a support ring 30 b, and a solder 40 b. The vapor chamber 10 b has an insert hole 12 b, and an end of the heatpipe 20 b is inserted into the insert hole 12 b. In addition, the support ring 30 b is sheathed on the heat pipe 20 b and disposed at a joint position between the heat pipe 20 b and the vapor chamber 10 b, and the heat pipe 20 b is combined to the vapor chamber 10 b by the solder 40 b.

The difference between this preferred embodiment and the first preferred embodiment resides on that the support ring 30 b has a chamfer 31 b disposed on a side adjacent to the heat pipe 20 b, so that the solder 40 b stays between the chamfer 31 b and the outer surface of the heat pipe 20 b without overflowing to the surface of the vapor chamber 10 b, so as to provide a better combining effect.

While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims. 

What is claimed is:
 1. A manufacturing method of a three-dimensional heat conducting structure, comprising: Step (a) providing a vapor chamber having at least one insert hole; Step (b) providing a heat pipe having an open end, and inserting the open end into the insert hole; Step (c) providing a support ring, and sheathing the support ring on either the heat pipe or the vapor chamber, wherein the supporting ring extends along an axial direction of the heat pipe and has a contact surface facing toward an outer surface of the vapor chamber, and the contact surface is in contact with the outer surface of the vapor chamber; and Step (d) providing a soldering means, and applying the soldering means between the support ring and the heat pipe to combine the heat pipe onto the vapor chamber.
 2. The manufacturing method of a three-dimensional heat conducting structure as claimed in claim 1, wherein in Step (a), the vapor chamber has a rim formed around the periphery of the insert hole and protruded from the outer surface of the vapor chamber.
 3. The manufacturing method of a three-dimensional heat conducting structure as claimed in claim 2, wherein in Step (c), the support ring is sheathed on the rim of the vapor chamber, and an inner wall surface of the support ring is in contact with an outer wall surface of the rim.
 4. The manufacturing method of a three-dimensional heat conducting structure as claimed in claim 1, wherein in Step (c), the support ring has a chamfer disposed on a side adjacent to the heat pipe.
 5. The manufacturing method of a three-dimensional heat conducting structure as claimed in claim 4, wherein in Step (d), the soldering means includes a solder, and the solder stays between the chamfer and an outer surface of the heat pipe without overflowing to a surface of the vapor chamber. 